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A disallowed goal, a three-minute stoppage to decide on a penalty shout and another hold-up following the visitors’ third goal all contributed to a bizarre first half on Merseyside – and left more questions about the use of technology.

The latest incidents come after the use of VAR in Chelsea’s third round replay against Norwich was heavily criticised – just a day after it had been praised for its part in Leicester City’s win over Fleetwood.